Is it the smallest bag they have? Like 3 pounds or something. I think in a yellow bag? If so, that is what I use. It was what they told me, and have not had any probs so far. (they are now 4 wks old)
TSC definitely carries normal chick starter.
24% is really high protein. Maybe fine, but regular chicken chick starter is normally 16%, sometimes 20%.
I am sure someone will chime in, but I'm also pretty sure if you bring it back (unopened) they'll exchange it for the normal chick starter.
Regular chick starter is from 18% for combination starter/grower to about 21% for plain starter. You got gamebird/turkey starter, most likely, but at 24%, it isn't bad. Some gamebird starters are up to 30% and you should never feed chicken chicks that high protein level. 24% isn't too bad, though, although still a tad high for them. If it was me, I'd go ahead and use it. Some may disagree.